1.2 FAT Filesystem using SST26 Media

This application shows an example of using the FAT File System to access SQI based SST26 flash media.

Description

File System Operations on the On-Board SST26 Flash Memory:

  • Performs a SYS_FS_FormatDisk
  • Opens a newfile.txt on the SST26 flash
  • Write and reads back 4KB of data on newfile.txt
  • Verifies the Data Read back

File system layer uses:

  • One instance of the Memory driver is used to communicate with the On-Board SQI Flash memory

Downloading and Building the Application

To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.

Path of the application within the repository is apps/fs/sqi_flash_fat.

To build the application, refer to the following table and open the project using its IDE.

Project Name Description
sam_a7d65_curiosity.X MPLABX project for SAMA7D65 Curiosity Board

Setting Up AT91Bootstrap loader

To load the application binary onto the target device, we need to use at91bootstrap loader. Refer to the at91bootstrap loader documentation for details on how to configure, build and run bootstrap loader project and use it to bootstrap the application binaries.

Setting Up the Hardware

The following table shows the target hardware for the application projects.

Project Name Description
sam_a7d65_curiosity.X MPLABX project for SAMA7D65 Curiosity Board

Setting Up SAMA7D65 Curiosity Board

  • Connect the USBA port J3 on the board to the computer using a Type-C USB cable (to power the board)

Running the Application

  1. Build and program the application using its IDE
  2. The LED is turned ON if data has successfully been written and read back from file “newfile.txt”
Refer to the following table for LED name:
Board LED Name
SAMA7D65 Curiosity Board RGB_LED (Green)